Influence of processing parameters of selective laser melting on high-cycle and very-high-cycle fatigue behaviour of Ti-6Al-4V

doi:10.1111/ffe.13361

IMECH-IR > 非线性力学国家重点实验室

	Influence of processing parameters of selective laser melting on high-cycle and very-high-cycle fatigue behaviour of Ti-6Al-4V
	Du LM(杜雷鸣)1,2; Qian GA(钱桂安)1 ; Zheng L 2; Hong YS(洪友士)1
通讯作者	Zheng, Liang([email protected]) ; Hong, Youshi([email protected])
发表期刊	FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
	2020-10-04
页码	17
ISSN	8756-758X
摘要	Orthogonal experiment design together with the analysis of variance was used to examine the processing parameters (laser power, scan speed, layer thickness and hatch spacing) of selective laser melting (SLM) for superior properties of SLM parts, in which nine groups of specimens of Ti-6Al-4V were fabricated. The results clarify that the influence sequence of individual parameter on the porosity is laser power > hatch spacing > layer thickness > scan speed. Ultrasonic fatigue tests (20 kHz) were conducted for the SLMed specimens in high-cycle fatigue (HCF) and very-high-cycle fatigue (VHCF) regimes. TheS-Ndata show that the fatigue strength is greatly affected by the porosity: the group with the smallest porosity percentage having the highest fatigue strength in HCF and VHCF regimes. Then, the tests on the validation group were performed to verify the optimal combination of SLM processing parameters. Moreover, the observations by scanning electron microscopy revealed that fatigue cracks initiate at lack-of-fusion defects in the cases of surface and internal crack initiation.
关键词	orthogonal experiment design processing parameters selective laser melting Ti-6Al-4V very-high-cycle fatigue
DOI	10.1111/ffe.13361
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000574772400001
关键词[WOS]	ADDITIVELY MANUFACTURED TI-6AL-4V ; CRACK INITIATION ; MECHANICAL-PROPERTIES ; TITANIUM-ALLOY ; MICROSTRUCTURE ; OPTIMIZATION ; PREDICTION ; DEPOSITION ; STRENGTH ; POROSITY
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary
资助项目	Chinese Academy of Sciences[XDB22040503] ; Chinese Academy of Sciences[XDB22020201] ; National Natural Science Foundation of China[11932020]
项目资助者	Chinese Academy of Sciences ; National Natural Science Foundation of China
论文分区	二类/Q1
力学所作者排名	1
RpAuthor	Zheng, Liang ; Hong, Youshi
引用统计	被引频次：60[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/85313
专题	非线性力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; 2.Harbin Inst Technol, Sch Sci, Shenzhen 518055, Peoples R China
推荐引用方式 GB/T 7714	Du LM,Qian GA,Zheng L,et al. Influence of processing parameters of selective laser melting on high-cycle and very-high-cycle fatigue behaviour of Ti-6Al-4V[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,2020:17.Rp_Au:Zheng, Liang, Hong, Youshi
APA	杜雷鸣,钱桂安,Zheng L,&洪友士.(2020).Influence of processing parameters of selective laser melting on high-cycle and very-high-cycle fatigue behaviour of Ti-6Al-4V.FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,17.
MLA	杜雷鸣,et al."Influence of processing parameters of selective laser melting on high-cycle and very-high-cycle fatigue behaviour of Ti-6Al-4V".FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES (2020):17.

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